Antiskid attachment for vehicle wheels



Jani. 19 ,1926. 1,570,051

F. 'DoMBRowsKl ANTISKID ATTACHMENT lFR VEHICLE WHEELS File`dAprl 13, 1925 2 Sheets-Sheet 1 YY1/iva 5565: w/Zan Jan. 19 1926. 1,570,051

F. DOMBROWSKI ANTISKID ATTACHMENT Foa VEHICLE WHEEL5 Filed April 13, 1925 2 Sheets-Sheet 2 1il l l A* ,L9 Jyff J0 9 i f .f'

v. 11514 le v d j* e l i;

Zi/Lesse.; fray/'awww Patented Jan. 19, 1926.y

PATENT OFFICE.

FRED DOMBROWSKI, OF CHICAGO, ILLINOIS.

ANTISKID ATTACHMENT FOR VEHICLE WHEELS.

Application led April 13, 1925.

To all 'u1/0m it may conce/Mt.'

Be it known that I, Furi) DoMRowsKi, a citizen of the United States, and a resident of the cily of Chicago, county of Cook, and State of Illinois, have invented certain. new and useful Improvements in ntiskid At tachments for Vehicle I'Vhecls, of which the following is a specication.

My invention relates to antiskid attacl1- ments for vehicle wheels, designed especially for use in connection with pneumatictired wheels and having means whereby to be secured with the fasteningl bolts for the wheel rims, yand the main object of my invention is the provision of an improved attachment of this character' which will be highly efficient in use and economical in manufacture.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings,

r forming a part of this specification, and in which,

Fig. 1 is a face view of a pneumatic-tired wheel, showing the application thereto of embodiments of my invention;

Fig. 2 is a cross section taken on the line 2-2 of Fig. 1; and

Fig. 3 represents an outer edge or tread view of a single shoe attachment detached from the vehicle wheel.

A preferred embodiment of my invention as illustrated in the accompanyingr drawings includes a shoe member f1 designed to eX- tend alongside a pneumatic tire as 5 on the outer face of the wheel 6. At its inner or hub approaching end, the shoe is provided with a laterally offset bracket 7 designed to fit flat upon the wheel rim 8 and having an aperture 9 designed to receive the rim fastening bolt 10 and to be secured rigidly therewith by means of the usual securingl nut 11 applied. to the outer end of said fastening bolt.

The shoe 4 has an arc-shaped portion 12 which conforms with the shape of the pneumatic tire 5, and the same is made preferably with spaced apart enlargements 13 holed through at 14 to provide suitable bearings for the ground engaging pin members 15. `The holes or bearings 14 are pro- Seria'l No, 22,533.

duced in radial relation with respect to the center or hub of the wheel. The ground engaging pins 15 have free lengthwise movement in their bearingsr Through the inner ends of the pin members are passed cotter pins 16 having eyes 17 with which are connected the inner ends of the pull springs 18 whose outer ends are secured upon the screw posts 19 suitably tapped .into the enlarged portions 13. The pin members 15 are, therefore, forced outwardly by the springs 18, but the outward movements thereof are arrested by the engagement of the Cotter pins with the adjacent sides of the enlarged. regions These parts are so proportioned and related that the pin members 15 are normally thrust outward with their extremities 20 projecting an appreciable distance beyond the curve of the circumference 21 of the pneumatic tire. During travel of the wheel, the pin members 15 first engage the ground or roadway at an angle and then as the wheel brings them into vertical or substantially vertical relation to the ground or roadway they yield inwardly to the curve of the wheel circumference 21. This anti-skid attachment may be quickly attached, since it is only necessary to remove the securing nut 11 and apply the bracket 7 to the rim fastening bolt 10 and then re-apply the securing nut 11.

In accordance with an important feature of the present invention, the anti-skid attachment may be made either in accordance with the single shoe 4 or in accordance with the double shoes 22 having a common arcshaped portion 23. By making the attachment in this manner, two brackets 24 are provided for securing the attachment with the wheel rim, it being understood that these brackets must be made so that they will come in proper position for securement upon two adjacent fastening bolts as 25. AttachH ments made with the double shoes 22 thus have two points of engagement with the securing means for the wheel rim and are accordingly held more securely to the Wheel.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but

desire to avail myself ol' such i'ariatiom: and modifications as come within the srope o't the appended claims.

Haring' described my invention, what l rlaim :n: new and desire to .Cierure by Letters Patent is:

l. In combination in a de riee of the kind deforibed, a Shoe member adapted to be ee enred to the eide ot a Wheel, and pins mounted in the shoe and normallfi7 itoreed outwardlyY into poeition `for engagement with the. roadway. silbernntiall;v as described.

ln eombinzition in e device oli the kind described. :i ehoe member adapted to be seenred with the rim :i-:cruringr menne, grronnd engaging pin members freely movable in the ehoe. and means 'roreingrY Said pin members outwardly into ground engaging position. enbetantially ae desoribed.

3. In combination in a dei'ice oinl the kind described, a Shoe member adapted to extend :ilongeide the tire, a bracket provided on the shoe and adapted to be eeenred npon tbe rim fasteningA bolt, and pin members haring lengthwise nioveinent in said shoe and normallyY Atoreed outwardly into position tor engagement with tbe ground, substan tialljv as described.

11e. In eon'ibiuation in a device of the kind described. a ehoe member baringn means for seeurement with the rim seourinf.;` means, bearings provided in Said Shoe member, pin members: mounted in Said bearings and 'reeljf movable therein, and Springe acting on Said pin meml'iere and normall7 forcing them into outward position 'tor engagement with the roadway. Substantially as described.

5. ln fffombination in :i device ot the kind described, :i sboe member havingl menne for eeenrement Witb the rim net-,urine means and baring a portion extendingr alongside tbc tire and me-wbaped in tormation corrcfipondi ,fr with tbe :drape olE tbe tire, radially arranged bearingsl in said :lie-sl1aped portion. pin memberl movable lengthwise in said bearings, and resilient moana foreing; Said pin members outwardly into poeition to engage the roadway, eubetantially im described.

t. .k device ot the kind described inelndine a elioe member adapted to be Secured rieid with tbe n'bcel rim, a bearing' pro- Yd in said shoe member. :1 pin member 'lreeljf morable in the bearing', n Spring 'toreingr said pin member outwardly into position to engage the roadway, and means limiting' the outward movement ol the pin men'iber. subetantialljyY :r: deseriliied.

A deriee ol' the kind deseribed inelluline' a eline member adapted to extend along- Hide thiI Wheel tire. means provided on the eboe member wherein' to eeenre it rigid with the wheel rim, an outer portion on the @Shoe member of are-shape in :formation rorrespondingr to the shape ol the tire. there beine' :i plurality ot radially arranged bearine's in raid aroshaped portion, pins Inova ble b'eeljiY in seid bearing, and resilient means toreine` Said pins ontvr'ardly1 with their extremities projecting beyond the rurre ol tbe peripher)7 of the tire, Substantially as described.

,ln testimony iifhereot I have Signed my name to this speeilieation.

FRED DOMBROVSKI. 

